A record number of brands are sponsoring athletes and teams at the Tokyo Olympic Games. It proves the 'five rings' are still a major draw – but can sponsorship in such a cluttered environment deliver value? British Olympic Association’s Tim Ellerton, H+K’s Jamie Corr, M&C Saatchi Sport & Entertainment's Jamie-Wynne Morgan and The Playbook’s Nick Meakin discuss how brands are making the most of the Olympics, and other trends in sports marketing.